What in the world is "Rockchuckin'"?

RuckChucker:
1. (n.)a tool, 2.(n.) a company, but most importantly 3. (adj.) a word use to describe a Stonehocker.  Rock chucker, Pebble pusher, Stone thrower, Snow hooker (my personal favorite); these are all the wonderful names my husband and I have heard when people can't remember our real name, or don't want too.  I like rock chucker, I think it's play full, and thought it would make for a nice play on words.